Minority Health Archive

Differences in Resting Metabolic Rate between White and African-American Young Adults

Sharp, Teresa A and Bell, Melanie L and Grunwald, Gary K and Schmitz, Kathryn H and Sidney, Stephen and Lewis, Cora E and Tolan, Kim and Hill, James O (2002) Differences in Resting Metabolic Rate between White and African-American Young Adults. Obesity Research, 10 (8). pp. 726-732.

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Abstract

Objective: A reported lower resting metabolic rate (RMR) in African-American women than in white women could explain the higher prevalence of obesity in the former group. Little information is available on RMR in African-American men. Research Methods and Procedures: We assessed RMR by indirect calorimetry and body composition by DXA in 395 adults ages 28 to 40 years (100 African-American men, 95 white men, 94 African-American women, and 106 white women), recruited from participants in the Coronary Artery Risk Development in Young Adults (CARDIA), Birmingham, Alabama, and Oakland, California, field centers. Results: Using linear models, fat-free mass, fat mass, visceral fat, and age were significantly related to RMR, but the usual level of physical activity was not. After adjustment for these variables, mean RMR was significantly higher in whites (1665.07 +/- 10.78 kcal/d) than in African Americans (1585.05 +/- 11.02 kcal/d) by 80 +/- 16 kcal/d (p < 0.0001). The ethnic x gender interaction was not significant (p = 0.9512), indicating that the difference in RMR between African-American and white subjects was similar for men and women. Discussion: RMR is ~5% higher in white than in African-American participants in CARDIA. The difference was the same for men and women and for lean and obese individuals. The prevalence of obesity is not higher in African-American men than in white men. Because of these reasons, we believe that RMR differences are unlikely to be a primary explanation for why African-American women are more prone to obesity than white women.


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Item Type: Article
Additional Information: This article is available at the publisher’s Web site. Access to the full text is subject to the publisher’s access restrictions.
Uncontrolled Keywords: metabolism, racial differences, gender differences, body composition, energy expenditure
Subjects: Health > Disparities
Health > Public Health > Chronic Illness & Diseases > Obesity
Research
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Depositing User: Kismet Loftin-Bell
Date Deposited: 24 Oct 2005
Last Modified: 05 Jul 2011 11:59
Link to this item (URI): http://health-equity.lib.umd.edu/id/eprint/298

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